# SOHO365 vs Primum

The clearest difference is rating: SOHO365 at 5.0 against Primum's 4.2. SOHO365 also leads on device support (3 vs 1). Primum's advantage is monetization model (ad-supported vs free with in-app purchases). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SOHO365 holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

SOHO365 ships an update every 5 weeks, Primum every 2 months. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SOHO365 | Primum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/soho365/id6478389331/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/primum/id6651755259/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 55 MB | 75 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [SOCIETY OF HEMATOLOGIC ONCOLOGY](https://appshunter.io/developer/1616616296) | [Primum](https://appshunter.io/developer/1707581637) |

## What reviewers say

### SOHO365

[App page](https://appshunter.io/ios/app/soho365/id6478389331)

Connect with a global community of hematologic oncology professionals. Access a comprehensive resource center with slides, publications, and videos. Stay updated with the latest news and journal articles, and manage event registrations and reminders.

**Highlights:** Global professional community access, Comprehensive resource center, Hematologic oncology discussions, Access to official journal and news, Event information and registration, Customizable reminders and alerts

**Features:** Vision Pro support

**In-app purchases:** none


### Primum

[App page](https://appshunter.io/ios/app/primum/id6651755259)

Connect with expert oncologists for case-specific advice and treatment decision support. This app facilitates direct messaging with specialists, offering actionable insights and a platform to manage your inquiries efficiently.

**Highlights:** Search and filter expert oncologists, Direct messaging with specialists, Real-time chat and notifications, Case-specific advice, Inbox management, Reference past inquiries

**Features:** macOS Compatibility, iMessage stickers

**In-app purchases:** none


## Frequently asked questions

### Is SOHO365 free?

SOHO365 is free to download, with no in-app purchases.

### Is Primum free?

Primum is free to download, with no in-app purchases.

### Which has better reviews, SOHO365 or Primum?

SOHO365 is rated higher. SOHO365 averages 5.0 out of 5 from 2 ratings, while Primum averages 4.2 from 5 ratings.

### Do SOHO365 or Primum have ads?

Neither SOHO365 nor Primum shows ads.

### Which is updated more often, SOHO365 or Primum?

SOHO365 ships an update every 5 weeks, and Primum every 2 months. Most recently, SOHO365 was updated on November 4, 2026 and Primum on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*